LX20B – Manual Page 12 / 67
LX20B-5D PCB have two Nano SIM card slots and two LEDs indicating the status,
on which SIM card the device is currently working (the proper LED will lit green).
Pressing the PROG button will start switching to the second (inactive) card in order
to verify its correct work. After about 2 minutes of work on the second card, the
device will automatically switch to the first SIM 1 card (primary server) or stay on
it if the button is pressed when the device is on the second SIM 2 card.
Connections of wires in the LX20B-5D is identical to that of the LX20B with a single
SIM card slot.
3.3. LX-ZAS POWER SUPPLY
The dedicated power supply LX-ZAS (product of EBS) possesses the following
parameters:
Maximum voltage of charging battery
0.2A or 1A (switched by jumper)
Voltage of signaling of low level
Voltage of switch-off battery
as well as it characterizes with following proprieties:
protection against opposite connecting battery.
protection against excessive unloading battery:
The battery protects before damage in case of long-lasting fading the AC. In
case of lack the AC and unloading below voltage 9.5V the battery becomes
separated from device automatically.
quick charging of the battery:
The jumper showed on Fig.2. place causes settlement of maximum current
of charging on 1A. We recommended jumper be taken off and the current of
charging battery carries out 0.2A.
Figure 2. Choice of current of charging the battery
Note: the applying the quick charging can bring to damage of battery.
Jumper ON => charging current 1A
Jumper OFF => charging current 0.2A
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